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Sandblasting is a process in which an abrasive material, entrained in a jet, is directed onto the surface of a casting to clean its surface. In a particular setup for sandblasting, the casting of mass m is placed on a flexible support of stiffness k as shown in Fig. 4.44(a). If the force exerted on the casting due to the sandblasting operation varies as shown in Fig. 4.44(b), find the response of the casting
an air conditioner based on the ideal vapor-compression refrigeration cycle uses r134a as the working fluid. states
an aluminum alloy specimen brought to tensile test had frac12 inch2 cross sectional area. it was tested to fracture and
a room in the lower level of a cruise ship has a 30cm diameter circular window.if the midpoint of the window is 4m
When one mole of argon gas is bubbled through a large volume of an Fe-Mn melt of xMn = 0.5 at 1863 K evaporation of Mn into the argon causes the mass of the melt to decrease by 1.5 g. The gas leaves the melt at a pressure of 1 atm. Calculate the acti..
A lever AB of negligible weight is loosely fitted onto a 2.5-in.-diameter fixed shaft. Knowing that the coefficient of static friction between the fixed shaft and the lever is 0.15, determine the force P required to start the lever rotating counte..
calculate the flow energy per pound-mass enthalpy and total enthalpy. two kilograms of ammonia at 200kpa .755 m3kg and
Consider an ideal Rankine cycle with a single open feed water heater. The boiler pressure is 800 psia, and the condenser pressure is 2 psia. Steam is extracted from the turbine to heat the feed water at 90 psia. Steam enters the turbine at 1000F.
a steel ring of 250mm diameter has a width of 50mm and a radial thickness of 5mm. it is split to leave a narrow gap of
determine the maximum velocity to which water can be accelerated by the nozzles before striking the turbine blades.
Calculate the Grash of number, the Nusselt number, the convective heat transfer coefficient (h), and the total heat transfer (Q_dot) in ambient air at Tinf = 30C for the following conjurations:
a racing boat planes over the water at 80 mph. the water temperature is 75f. the wetted surface of the boat i.e. the
design a crank-rocker mechanism with a time ratio of q throw angle of deltasigmamax and time per cycle of t. specify
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